If you want a little more zip than .22 LR, but don't want to step up to .22 Hornet/.17 Hornet, my vote is for .22 WMR in a rifle.
Sure, there's twice as much bullet drop as .17 HMR, at 200 yards. But, there's also twice as much mass in the bullet, and you really don't intend to shoot beyond 150 yards. And... you can get cheap loads for .22 WMR that are less than half the price of .17 HMR ammo. CCI's .22 WMR and .17 HMR ammo is good stuff, but I've found ArmsCor and old-stock Fiocchi .22 WMR to be just as good (same stuff).
(Fiocchi .22 WMR is now being made by CCI. So, that brings CCI's WMR/HMR/HM2 production to: CCI, Federal, Speer, Hornady, Remington, Fiocchi, and more...)

Of course... a suppressor would negate the need for another rifle.

__________________"Such is the strange way that man works -- first he virtually destroys a species and then does everything in his power to restore it."